Base64 Image Viewer
Free online Base64 Image Viewer. Decode and view Base64-encoded images instantly. Paste a Base64 string to see the image. All processing is local and private.
Image Preview
How to Use Base64 Image Viewer
Paste Your Base64 String
Paste a Base64-encoded image string into the input area. It can be a raw Base64 string or a full data URI (starting with data:image/...).
Click Decode
Click "View Image" to decode the Base64 string and display the image. The tool automatically detects the image format from the data URI or the Base64 header bytes.
View and Download
The decoded image appears in the preview area. You can see the image dimensions, file size, and MIME type. Right-click to save the image to your computer.
Frequently Asked Questions
What format should the Base64 string be in?
You can paste either a raw Base64 string or a full data URI (e.g., data:image/png;base64,iVBORw0KGgo...). The tool handles both formats. If pasting a raw Base64 string, the tool attempts to detect the image format automatically.
What image formats are supported?
PNG, JPEG, GIF, WebP, SVG, BMP, and ICO are all supported. The browser handles the actual decoding, so any format your browser can display will work here.
Is my image data secure?
Yes — all processing happens locally in your browser. The Base64 string is never uploaded to any server. The image is rendered directly in your browser using a data URI.
Decoding Base64 Images in Practice
Base64-encoded images show up in many places: API responses, database fields, HTML data URIs, and CSS inline images. Being able to quickly decode and view them saves time when debugging or inspecting data. Instead of writing a script or opening a dev tool, just paste the string here and see the image.
Where You'll Encounter Base64 Images
- REST API responses that embed images as Base64 strings
- HTML
<img src="data:image/png;base64,...">tags - CSS
background-image: url(data:...)declarations - Database BLOB fields exported as Base64 text
- Email attachments encoded in MIME format